2002F250 always dies after full warm-up - Ford Powerstroke Diesel Forum
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Old 11-22-2013, 11:43 AM
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2002F250 always dies after full warm-up

I've had this truck over 3 yrs ( now ~195,000 m ) with no problems, til last month, when it died after 5 miles. Then, same thing again. Two tows home. I'm not close to a ford diesel mechanic. On this forum, it seems to be same problem as described by Clinton2323 on 11/18/13 ( no replies) Then, I let it run for 90 min in my driveway, without trouble, AND seeing that the temp guage was only at ~1/4 up, I ran the throttle at 2000 RPM, and 2500, and even 3000 rpm, until the engine died, AS SOON AS IT REACHED FULL OPERATING TEMP ( ~ 1/2 way up the temp guage )
It will start after it cools down completely ,and runs rough until I raise the throttle a bit, for a few seconds.
I bet it still dies, when it's fully warms up..
I've drained the water-bowl, added Cetane-Boost, and changed the fuel filters after the first incident.
So....What's up here???
At least my 1984 Benz300D always starts !
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Old 11-22-2013, 04:21 PM
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I'm thinking it's most likely a CPS issue, that's where I'd start. Everybody should carry a spare CPS anyway so even if you tried this and it didn't solve this problem you'd have your old one as a spare. They're not expensive and I would buy a Genuine Ford CPS the aftermarket ones can be problematic...

If that didn't do it, I would next suspect the IPR, it's a Much more expensive sensor that is also associated with heat failure. You can check it visually maybe to ensure it's plugged in tight and the "tin nut" hasn't fallen off and is allowing the coill to slide around BUT, I would get it on a professional scanner to check it's operation before you just go buy one (as I said they're not cheap)

Search in the box above (or Google with 7.3 added) if these terms (CPS or IPR) are foreign to you and read-up on where they are and what they do
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